I generally look at statements like "paper tuning indicates that there is a problem, but at least with field points I am doing good" in this light: You're shooting that well poorly tuned, how well would you be shooting ideally tuned?
Tuning might seem like a long, drawn out process, but it's a wives-tale that shops like to propagate to keep people coming back for service. I can set up a bow from new in box with a cam lean issue to (near as I can get to) perfectly tuned in a Saturday. I didn't think it was possible, but a buddy of mine broke a limb on his old bow last year, bought an Outlaw that we eventually discovered had a cam lean problem from factory, and hunted it the next week. Took us one day to set center shot, paper tune, bareshaft tune his arrows, sight it in, realize the cam lean issue, adjust the lean, RE-set for center shot, RE-tune the rest, and RE-sight in. We WERE lucky, however, that he and I shoot the same shafts. I had a set of pre-bareshaft tuned and fletched arrows that matched his for model and length, so we were able to tune the bow with MY arrows, then bareshaft tune HIS arrows and get fletching glued and drying so they were ready the next day. If we were going from bare arrows, we'd have lost an extra day waiting on glue to dry before we could have finalized his sight pins.
So I'd generally agree, there's not much time left before season starts, but there's plenty of time to re-tune your bow.
